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Offline SC4SNMP installation

See the following options for an offline SC4SNMP installation.

Local machine with internet access

To install the SC4SNMP offline, first, download some packages from the Github release and then move them to the SC4SNMP installation server. Those packages are:

  • dependencies-images.tar
  • splunk-connect-for-snmp-chart.tar

Additionally, you will need:

  • pull_mibserver.sh script
  • pull_gui_images.sh script

to easily pull and export mibserver image and GUI images.

Moreover, the SC4SNMP docker image must be pulled, saved as a .tar package, and then moved to the server as well. This process requires Docker to be installed locally.

Images can be pulled from the following repository: ghcr.io/splunk/splunk-connect-for-snmp/container:<tag>. The latest tag can be found in The Splunk Connect for SNMP Repository, under the Releases section with the label latest.

See the following example of docker pull command:

docker pull ghcr.io/splunk/splunk-connect-for-snmp/container:<tag>

Afterwards, save the image. The directory where this image will be saved can be specified after the > sign:

docker save ghcr.io/splunk/splunk-connect-for-snmp/container:<tag> > snmp_image.tar

Other packages you have to pull are mibserver and GUI images. Do this by executing pull_mibserver.sh and pull_gui_images.sh scripts from the Release section, or copy-pasting its content. See the following:

chmod a+x pull_mibserver.sh # you'll probably need to make file executable
./pull_mibserver.sh
chmod a+x pull_gui_images.sh
./pull_gui_images.sh

Those scripts should produce mibserver.tar with the image of the mibserver and sc4snmp-gui-images.tar with GUI images inside.

All five packages, mibserver.tar, snmp_image.tar, dependencies-images.tar, sc4snmp-gui-images.tar and splunk-connect-for-snmp-chart.tar, must be moved to the SC4SNMP installation server.

Installation on the server

On the server, all the images must be imported to the microk8s cluster. This can be done with the following command:

microk8s ctr image import <name_of_tar_image>

Run the following commands:

microk8s ctr image import dependencies-images.tar
microk8s ctr image import snmp_image.tar
microk8s ctr image import mibserver.tar

Afterwards, create values.yaml. It is a little different from values.yaml used in an online installation. The difference between the two files is the following, which is used for automatic image pulling:

image:
  pullPolicy: "Never"

An example values.yaml file can be found in the Offline SC4SNMP values.yaml template.

Next, unpack the chart package splunk-connect-for-snmp-chart.tar. It will result in creating the following splunk-connect-for-snmp directory:

tar -xvf splunk-connect-for-snmp-chart.tar --exclude='._*'

Finally, run the helm install command in the directory where both the values.yaml and splunk-connect-for-snmp directories are located:

microk8s helm3 install snmp -f values.yaml splunk-connect-for-snmp --namespace=sc4snmp --create-namespace